Single-diaphragm piezoelectric ceramic loudspeaker
A technology of piezoelectric ceramics and piezoelectric ceramic sheets, applied in the direction of piezoelectric/electrostrictive transducers, sensors, electrical components, etc., can solve the problems of loss and damage to other devices, and achieve the effect of improving the service life
Active Publication Date: 2011-05-25
ZHANGJIAGANG YUTONG ELECTRONICS TECH
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Problems solved by technology
[0004] The main disadvantage of the piezoelectric ceramic speaker with the above structure is: since the piezoelectric ceramic sheet and the metal film are directly attached and installed, the piezoelectric ceramic sheet will conduct with the metal film to generate current accumulation or static electricity, thereby causing damage to other devices ——such as the motherboard in the mobile phone, etc., causing unnecessary losses
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[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] see figure 1 As shown, the single-membrane piezoelectric ceramic speaker of the present invention includes a front cover 101, a positioning boss 1011 is provided on the outer side of the front cover 101, a metal film 102 is provided on the inside of the front cover 101, and a metal film 102 is provided on the metal film 102 An insulating organic vibrating diaphragm 103 is arranged on the insulating organic vibrating diaphragm 103, and a single crystal piezoelectric ceramic sheet 106 is arranged on the insulating organic vibrating diaphragm 103. The metal thin film 102, the insulating organic vibrating diaphragm 103 and the single crystal piezoelectric ceramic sheet 106 constitute a The vibration assembly of the piezoelectric ceramic speaker; the flexible printed circuit board 104 is pressed on the single crystal piezoelectric ceramic sheet 106, and is electrical...
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The invention discloses a single-diaphragm piezoelectric ceramic loudspeaker which does not generate current crowding and static electricity during working. The single-diaphragm piezoelectric ceramic loudspeaker comprises a front cover. A metal film is arranged on the internal side of the front cover. An insulated organic vibrating diaphragm is arranged on the metal film. A single-crystal piezoelectric ceramic plate is arranged on the organic vibrating diaphragm. The metal film, the organic vibrating diaphragm and the single-crystal piezoelectric ceramic plate form the vibrating assembly of the piezoelectric ceramic loudspeaker. A flexible printed circuit board is pressed on the single-crystal piezoelectric ceramic plate and is electrically connected with the single-crystal piezoelectric ceramic plate. The metal film, the organic vibrating diaphragm, the single-crystal piezoelectric ceramic plate and the flexible printed circuit board form the piezoelectric sounding device of the piezoelectric ceramic loudspeaker. A rear cover is fixedly arranged on the front cover. The piezoelectric sounding device is fixedly installed in a cavity between the rear cover and the front cover. By adopting the structure, the single-diaphragm piezoelectric ceramic loudspeaker is suitable for a portable equipment terminal and can be used for replaying voices and music.
Description
technical field [0001] The invention relates to a piezoelectric ceramic speaker, in particular to a piezoelectric ceramic speaker used for reproducing voice and music in a portable device terminal. Background technique [0002] Currently commonly used piezoelectric ceramic speakers include a front cover, a metal film is arranged on the inside of the front cover, and a single crystal piezoelectric ceramic sheet is arranged on the metal film. The metal film and single crystal piezoelectric ceramic sheet constitute the vibration component of the piezoelectric ceramic speaker. , the flexible printed circuit board is pressed on the single crystal piezoelectric ceramic sheet and electrically connected with the single crystal piezoelectric ceramic sheet, and the metal film, single crystal piezoelectric ceramic sheet and flexible printed circuit board constitute a piezoelectric sound-generating device; A rear cover is also fixedly arranged on the front cover, and the piezoelectric s...
Claims
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IPC IPC(8): H04R17/00
Inventor 贾开成贾军壮
Owner ZHANGJIAGANG YUTONG ELECTRONICS TECH